In canon, Harry and Narcissa have no such soul bond. So in the fanfiction, it's a completely new aspect. Canonically, Narcissa is mainly concerned with her family's well - being within the Death Eater regime. But in the fanfiction, the soul bond would force her to think beyond her family's usual allegiances. For Harry, in canon he is focused on defeating Voldemort and his Death Eaters, while in the fanfiction, this bond with Narcissa might make him see the other side in a different light, perhaps finding some redeeming qualities in those he once considered pure enemies.
Well, without having read 'Trinity the Novel', it's hard to say precisely. However, if we consider the word 'trinity', it often implies a group of three. So perhaps the novel focuses on three main storylines that are connected in some way. Maybe it's three generations of a family, or three friends on different life journeys that ultimately converge. It could also deal with three aspects of a single character's personality.
The 'the trinity novel' could be about all sorts of things. It might be a story of three friends who are like a trinity, inseparable and each having their own unique role. Or perhaps it's about a trinity of secrets that the main character has to uncover. Maybe it's set in a post - apocalyptic world where there are three different factions, and the story follows the struggle between them which is symbolically presented as a trinity of powers.
In 'Persona 4 Visual Novel', the gay persona might represent the diversity of the game's character creation and the exploration of different sexual orientations within the game's fictional world. It could add more depth to the relationships and storylines.
Perhaps the fanfiction focuses on the cultural clash between the two groups. The Persona 4 characters are from a small town, while the Persona 5 crew is from the big city. Their different ways of handling things and their unique Personas could lead to some interesting interactions. For example, Yu and Joker might have different leadership styles that they have to reconcile in order to succeed against the shadows.
Canon magic in the Harry Potter series is well - defined with specific rules and limitations for each type of magic. However, soul magic in fanfiction can be more fluid. Fanfiction authors can create their own rules for soul magic. For example, they might write that a wizard can use soul magic to transfer memories from one soul to another, which is completely new compared to the canon magic.
Anime canon refers to the content that is considered official and part of the anime's storyline. Manga canon is the content that is officially part of the manga's story. Usually, anime canon is based on manga canon but can have some adaptations or additions.